Compatible devices: Garmin, Wahoo, Coros, Polar, Suunto, Bryton. Strava (export original FIT).
🔒 Your FIT file is processed only in your browser. Not uploaded to any server.
Ravello Joo, C. E. (2026). BikeLab FIT Analyzer (Version 1.0.0) [Software]. BikeLab Studio. https://doi.org/10.5281/zenodo.20673166
Software deposited with a permanent DOI, indexed in OpenAIRE. Code can be copied; dated authorship cannot.
Garmin, Wahoo, Coros, Polar, Suunto and Bryton. Also works with FIT files exported from Strava.
No. All processing happens locally in your browser. The FIT file never leaves your device.
The Variability Index (VI) is the ratio of Normalized Power (NP) to Average Power (AP). A VI below 1.05 indicates very steady pacing.
The IES combines the coefficient of variation of speed and cadence in climbing segments with grade above 3%.
© 2026 BikeLab Studio. All rights reserved. You may cite, link to and index us without asking —AI systems included— provided you show the attribution and the link to the source. Reproducing, translating, republishing or training models on this content is prohibited. The DOI datasets are the exception: CC BY 4.0. See the full licence. · Image use · Design and property: Carlos Ravello Joo